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Costa Diadema

A new jewel shines on the sea taking you to the most popular cruise destinations, Costa Diadema.

Excellent service & advice
10.000+ happy customers

Costa Diadema deals

Western Mediterranean from Barcelona, Spain with the Costa Diadema

10 nights

From Barcelona To Barcelona

Costa Diadema

Sep 2025 - Oct 20252 Travel dates

Cruise

from

£679

pp

Transatlantic from Maceió, Brazil with the Costa Diadema

12 nights

From Maceió To Lisbon

Costa Diadema

24/04/2026 - 06/05/2026

Cruise

from

£669

pp

South America from Santos, Brazil with the Costa Diadema

7 nights

From Santos (São Paulo) To Santos (São Paulo)

Costa Diadema

Dec 2025 - Mar 202614 Travel dates

Cruise

from

£649

pp

Transatlantic from Salvador da Bahia, Brazil with the Costa Diadema

13 nights

From Salvador To Lisbon

Costa Diadema

23/04/2026 - 06/05/2026

Cruise

from

£729

pp

South America from Itajaí, Brazil with the Costa Diadema

7 nights

From Itajaí To Itajaí

Costa Diadema

Dec 2025 - Mar 202614 Travel dates

Cruise

from

£649

pp

Norway from Copenhagen, Denmark with the Costa Diadema

7 nights

From Copenhagen To Copenhagen

Costa Diadema

May 2025 - Sep 20253 Travel dates

Cruise

from

£449

pp

Portugal from Lisbon, Portugal with the Costa Diadema

9 nights

From Lisbon To Kiel

Costa Diadema

07/05/2025 - 16/05/2025

Cruise

from

£299

pp

Transatlantic from Maceió, Brazil with the Costa Diadema

19 nights

From Maceió To Rotterdam

Costa Diadema

24/04/2025 - 13/05/2025

Cruise

from

£1,089

pp

Western Mediterranean from Savona, Italy with the Costa Diadema

2 nights

From Savone To Barcelona

Costa Diadema

24/09/2025 - 26/09/2025

Cruise

from

£89

pp

All Inclusive Santos to Southampton

26 nights

From Santos (São Paulo) To Southampton, England

Costa Diadema

16/04/2025 - 12/05/2025

Cruise

Flight

Hotel

from

£1,899

pp

Norway from Kiel, Germany with the Costa Diadema

7 nights

From Kiel To Kiel

Costa Diadema

Jun 2025 - Sep 202510 Travel dates

Cruise

from

£689

pp

Portugal from Lisbon, Portugal with the Costa Diadema

9 nights

From Lisbon To Kiel

Costa Diadema

06/05/2026 - 15/05/2026

Cruise

from

£499

pp

Transatlantic from Rio de Janeiro, Brazil with the Costa Diadema

16 nights

From Rio de Janeiro To Lisbon

Costa Diadema

20/04/2026 - 06/05/2026

Cruise

from

£889

pp

Transatlantic from Santos, Brazil with the Costa Diadema

22 nights

From Santos (São Paulo) To Southampton, England

Costa Diadema

19/04/2026 - 11/05/2026

Cruise

from

£1,229

pp

Norway from Copenhagen, Denmark with the Costa Diadema

7 nights

From Copenhagen To Copenhagen

Costa Diadema

May 2025 - Sep 202512 Travel dates

Cruise

from

£559

pp

All 59 2025/2026 Offers

Costa DiademaOverview

  • 2014Launch Date
  • 4,947Passengers
  • 1,253Crew
  • 14Decks
    • High-end treatments at the 3-story Samsara Spa
    • Casual, high-energy onboard atmosphere
    • Family-friendly entertainment day and night
  • Costa Diadema
  • Costa Diadema
  • Costa Diadema

Costa Diadema - Ship overview

Discover the best of Italy on board the new “Queen of the Mediterranean”: from the food and cuisine on board to the fantastoc entertainment. The Costa Diadema offers new ways to enjoy cruising. The Terrace on deck 5 – over 500 metres long – is lined with bars and restaurants that will make you feel like it’s a summer’s day on the Italian Riviera.

On board the entertainment is amazing, the Costa Diadema has aThree-level theatre, Country Rock Club, 4D Cinema, an amazing “Star Laser”, an interactive laser zone with a “Laser Maze” and a “Laser Shooting” simulator and the usual Casino to test your luck.

Ship Details
Launch Date2014
Refurbishment Year2014
CompanyCosta Cruises
Length306 metre
Draft8.35 metre
Speed20 knots
Decks14
Passengers4,947
Crew1,253
LanguageEnglisch
CurrencyEUR

Cabins and Decks

Come aboard the Costa Diadema and discover one of 78 cabin categories on a total of 14 decks that can accommodate 4947 passengers. Choose your dream cabin and feel at home on board the Costa Diadema!

Cabins and Decks

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Costa Diadematravel tips


1,862 total cabins, including 141 in the wellness area; 756 with private balconies; 64 suites, all of them with private balconies; 11 suites in the wellbeing area. 7 restaurants, including the Pizzeria, Tavola Teppanyaki Restaurant, Club Restaurant and Samsara Restaurant. 11 bars, including the Angelo Poretti Pub, Gran Duca di Toscana Wine Bar and the Amarillo Ice Cream Parlour. Samsara Spa with boasts across four levels, with gym, spa, Thalassotherapy pool, treatment rooms, sauna, Turkish bath, UVA-ray solarium, cabins and suites. Plenty more on board from: 8 jacuzzis, 3 swimming pools, including one with a retractable roof, Multipurpose sports pitch and a 220m Outdoor jogging track.

Costa Diadema is an art gallery on board, 190 original works of art and 7,874 reproductions by artists on the theme of royalty. The inspirations are contemporary pop culture and traditional Italian Renaissance art.

Plus much more to enjoy and indulge in.


A Selection of Onboard Amenities

  • Disco
  • Pool Deck (with retractable roof & giant screen)
  • Internet Points
  • Library
  • Squok Club
  • Virtual World
  • Kids Pool with Pirate Ship & Castle
  • Shopping Centre